Übersetzung für '
bow drill' von Englisch nach Deutsch
| NOUN | a bow drill | bow drills |
NOUN article.ind sg | pl
21 Übersetzungen
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Anwendungsbeispiele Englisch
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- While the pump-drill and the bow-drill were used in Western Civilization to bore smaller holes for a larger part of human history, the Auger was used to drill larger holes starting sometime between Roman and Medieval ages.
- The Russian polymath Mikhail Lomonosov developed a spring-driven coaxial rotor in 1743, and the French naturalist Christian de Launoy created a bow drill device with contra-rotating feather propellers.
- The bow drill uses the same principle as the hand drill (friction by rotation of wood on wood) but the spindle is shorter, wider (about the size of a human thumb) and driven by a bow, which allows longer, easier strokes and protects the palms.
- The bow drill was used to drill holes into carnelian in Mehrgarh in the 4th-5th millennium BC.
- A rope was wrapped around the shaft and pulled in a similar way as a Bow drill.
- It was also the first sculpture Michelangelo created without the use of a bow drill and the first sculpture to reach such a state of completion with the marks of the subbia chisel left to stand as a final surface.
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